Journal
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
Volume 7, Issue -, Pages 271-278Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.bcab.2016.07.003
Keywords
Rosmarinus officinalis L; Phenological stages; alpha-Pinene; Essential oil composition; Phytotoxic activity
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Phytotoxic activity and variation in the quantity and quality of the essential oil (EO) of Rosmarinus officinalis L. (Lamiaceae) were examined at different phenological growth stages of full flowering (FF), fruit set (FS) and full ripened fruit (FRF). The EO yields (w/w %) at different stages were in the order of: FF (0.94%), FS (0.98%) and FRF (1.15%). The EO samples were analyzed by gas chromatography (GC) and GC-mass spectrometry (GC-MS). The main oil components at different phenological stages were found to be alpha-pinene (25.8-27.7%), camphor (8.6-9%), camphene (6.5-7.7%) and 1, 8-cineole (9.4-9.6%). The EO phytotoxicity activity of the mentioned stages was determined at 0, 300, 600, 900, 1200, 1500 and 1800 mu IL-1 concentrations on a weed plant, prickly lettuce (Lactuca serriola L.), and a crop, radish (Rhaphanus sativus L.). The inhibitory effect of rosemary was found to be depended on the plant's phenological growth stages and EO concentrations. (C) 2016 Elsevier Ltd. All rights reserved.
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